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Journal Article

Suggestive linkage to a neighboring region of IRF6 in a cleft lip and palate multiplex family.

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Ullmann,  Reinhard
Molecular Cytogenetics (Reinhard Ullmann), Dept. of Human Molecular Genetics (Head: Hans-Hilger Ropers), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Citation

Jakobsen, L. P., Ullmann, R., Kjaer, K. W., Knudsen, M. A., Tommerup, N., & Eiberg, H. (2007). Suggestive linkage to a neighboring region of IRF6 in a cleft lip and palate multiplex family. American Journal of Medical Genetics Part A, 143(22), 2716-2721. doi:10.1002/ajmg.a.32011.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-81BE-A
Abstract
Cleft lip and/or palate (CL/P) is a common congenital malformation with a complex etiology, as many genes and environmental factors have been shown to play a role in craniofacial development. We used a genetic mapping approach to analyze a family with multiplex CL/P. A genome-wide scan with a 10 kb single nucleotide polymorphism (SNP) chip followed by fine mapping with microsatellite markers in a CL/P multiplex family suggested linkage (maximum multipoint LOD score of 2.41) to a 6.5 Mb interval at 1q32.1-q32.2. This interval was close to, but excluded IRF6. Mutations in the IRF6 (1q32.2) cause syndromic forms of CL/P, and several association studies have shown that polymorphisms in and around IRF6 are associated with non-syndromic CL/P (NSCLP). However, in the family described here, IRF6 was excluded from the linkage interval. Sequencing of selected genes in the interval and comparative genome hybridization (CGH) did not reveal any mutations or genomic aberrations. Our data suggest that an unidentified CL/P gene, or a non-coding IRF6 regulatory element in this linkage interval may have caused CL/P in this family.